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Diffstat (limited to 'include/efi/partition.h')
| -rw-r--r-- | include/efi/partition.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/include/efi/partition.h b/include/efi/partition.h new file mode 100644 index 0000000000..8ce62c859b --- /dev/null +++ b/include/efi/partition.h @@ -0,0 +1,128 @@ +/************************************************************ + * EFI GUID Partition Table + * Per Intel EFI Specification v1.02 + * http://developer.intel.com/technology/efi/efi.htm + * + * By Matt Domsch <Matt_Domsch@dell.com> Fri Sep 22 22:15:56 CDT 2000 + * Copyright 2000,2001 Dell Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + ************************************************************/ + +#ifndef FS_PART_EFI_H_INCLUDED +#define FS_PART_EFI_H_INCLUDED + +#include <linux/types.h> +#include <linux/uuid.h> + +#define MSDOS_MBR_SIGNATURE 0xaa55 +#define EFI_PMBR_OSTYPE_EFI 0xEF +#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE + +#define GPT_BLOCK_SIZE 512 +#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL +#define GPT_HEADER_REVISION_V1 0x00010000 +#define GPT_PRIMARY_PARTITION_TABLE_LBA 1 + +#define PARTITION_SYSTEM_GUID \ + GUID_INIT( 0xC12A7328, 0xF81F, 0x11d2, \ + 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) +#define LEGACY_MBR_PARTITION_GUID \ + GUID_INIT( 0x024DEE41, 0x33E7, 0x11d3, \ + 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F) +#define PARTITION_MSFT_RESERVED_GUID \ + GUID_INIT( 0xE3C9E316, 0x0B5C, 0x4DB8, \ + 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE) +#define PARTITION_BASIC_DATA_GUID \ + GUID_INIT( 0xEBD0A0A2, 0xB9E5, 0x4433, \ + 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7) +#define PARTITION_LINUX_DATA_GUID \ + GUID_INIT( 0x0FC63DAF, 0x8483, 0x4772, \ + 0x8E, 0x79, 0x3D, 0x69, 0xD8, 0x47, 0x7D, 0xE4) +#define PARTITION_LINUX_RAID_GUID \ + GUID_INIT( 0xa19d880f, 0x05fc, 0x4d3b, \ + 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e) +#define PARTITION_LINUX_SWAP_GUID \ + GUID_INIT( 0x0657fd6d, 0xa4ab, 0x43c4, \ + 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f) +#define PARTITION_LINUX_LVM_GUID \ + GUID_INIT( 0xe6d6d379, 0xf507, 0x44c2, \ + 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28) +#define PARTITION_BAREBOX_ENVIRONMENT_GUID \ + GUID_INIT( 0x6c3737f2, 0x07f8, 0x45d1, \ + 0xad, 0x45, 0x15, 0xd2, 0x60, 0xaa, 0xb2, 0x4d) + +/* based on linux/include/genhd.h */ +struct legacy_partition { + unsigned char boot_ind; /* 0x80 - active */ + unsigned char head; /* starting head */ + unsigned char sector; /* starting sector */ + unsigned char cyl; /* starting cylinder */ + unsigned char sys_ind; /* What partition type */ + unsigned char end_head; /* end head */ + unsigned char end_sector; /* end sector */ + unsigned char end_cyl; /* end cylinder */ + __le32 start_sect; /* starting sector counting from 0 */ + __le32 nr_sects; /* nr of sectors in partition */ +} __attribute__ ((packed)); + +/* based on linux/fs/partitions/efi.h */ +typedef struct _gpt_header { + __le64 signature; + __le32 revision; + __le32 header_size; + __le32 header_crc32; + __le32 reserved1; + __le64 my_lba; + __le64 alternate_lba; + __le64 first_usable_lba; + __le64 last_usable_lba; + guid_t disk_guid; + __le64 partition_entry_lba; + __le32 num_partition_entries; + __le32 sizeof_partition_entry; + __le32 partition_entry_array_crc32; + + /* The rest of the logical block is reserved by UEFI and must be zero. + * EFI standard handles this by: + * + * uint8_t reserved2[ BlockSize - 92 ]; + */ +} __attribute__ ((packed)) gpt_header; + +typedef struct _gpt_entry_attributes { + u64 required_to_function:1; + u64 no_block_io_protocol:1; + u64 legacy_bios_bootable:1; + u64 reserved:45; + u64 type_guid_specific:16; +} __attribute__ ((packed)) gpt_entry_attributes; + +#define GPT_PARTNAME_MAX_SIZE (72 / sizeof (wchar_t)) +typedef struct _gpt_entry { + guid_t partition_type_guid; + guid_t unique_partition_guid; + __le64 starting_lba; + __le64 ending_lba; + gpt_entry_attributes attributes; + wchar_t partition_name[GPT_PARTNAME_MAX_SIZE]; +} __attribute__ ((packed)) gpt_entry; + +typedef struct _legacy_mbr { + u8 boot_code[440]; + __le32 unique_mbr_signature; + __le16 unknown; + struct legacy_partition partition_record[4]; + __le16 signature; +} __attribute__ ((packed)) legacy_mbr; + +#endif /* _DISK_PART_EFI_H */ |